Free qtgzmanager software for linux

QTGZManager project is a simple TGZ management app designed to run on any slackware-based system.
Main features:
- Show packages available in the selected directory - each with an icon representing its status based on the installed version (if any)
- Show all packages installed in the system
- Show information for selected packages
- Provide a means to move a package to another directory (using drag and drop) as well as delete any package
- Create/remove directories
- Execute actions on packages: install, upgrade, downgrade and remove (using the slackware pkgtools) - with root access, but only when needed (using kdesu)
- And it is fast, thanks to being written in C++.